Question

1000 L/h of oil is heated from 40C to 70 C in a 3 cm ID heated copper tube. The inner surface of the tube
is maintained at 100 C. Since the temperature dependencies of the fluid are not given, the properties
will be assumed constant. Assume the viscosity ratio equal one. The following physical property data
are available for the oil.
?? = 2090??? ?
? = 880 ??/?3
? = 0.00062 ??/(? ?)
? = 0.173?/? ?
?? = 7.49

1000 L/h of oil is heated from 40C to 70 C in a 3 cm ID heated copper tube. The inner surface of the tube
is maintained at 100 C. Since the temperature dependencies of the fluid are not given, the properties
will be assumed constant. Assume the viscosity ratio equal one. The following physical property data
are available for the oil. What is the length of the tube?
?? = 2090?/?? ?
? = 880 ??/?3
? = 0.00062 ??/(? ?)
? = 0.173?/m ?
?? = 7.49

Answer 1

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